Y÷1 =y
answer : y
because 1y means 1 times y
Answer:

Step-by-step explanation:
Answer:
The length of shadow decrease at 0.48 m/s.
Step-by-step explanation:
The distance of man from building = x
Thus initially, x = 12
It is given that dx/dt= -1.3 m/s
Let the shadow height = Y
Now solve for the
when x=4
from the diagram (triangle) it can be seen similar triangles with similar base/height ratios.

y=5/6+3
I am not positive on this answer I am sorry if it is wrong

Hope you could get an idea from here.
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